Control circuit of vary frequency power supply introduces, digests and absorbs advanced control circuit both home and abroad. The inverter trigger circuit of the system adopts automatic frequency sweep startup technology, which ensures successful full power startup of medium-frequency; rectification control circuit adopts large scale rectification phase-shift trigger circuit with strong anti-interference, good linearity, simple debugging, stable operation; good current limiting and voltage limiting performance can avoid frequent over-voltage and over-current problems caused by load change.

Overall protection function load short-circuit, open circuit, low frequency, water shortage, over current, over voltage, phase stagger, phase loss etc.) ensure automatic safe stop of equipment when various failures happen.

Medium-frequency melting adopts fast melting method to shorten melting time, improve unit output, reduce electricity consumption and ignition loss of precious elements. 1T, 2T, 3T, 5T……electric furnaces produced by our factory can ensure to melt one furnace in one hour; furnace under 1T can melt one furnace in 20 to 50 minutes, saving 10~20% of electricity per ton compared with traditional domestic medium-frequency furnace.

High-power frequency conversion power supply adopts 12 and 24 pulse rectification to improve base of net current, enhance power and reduce interference to the grid.

 

2. Double power supply (known as One-to-Two)

 

Within rated power, two sets of control of this device can flexibly dispatch power to the two furnaces at any way: one melting electric furnace, the other furnace for heat-insulation and casting. Besides, the two furnaces can be used alternatively.

 

We Hei Yan make elbow machine, pipe bending machine, pipe expanding machine, tee machine, hydraulic press, beveling machine and all its mandrel head according to customer's requirements. We hope we can have cooperate with your company if you are in need of such machinery.